Passive wave compensation device for sea surface operation

Abstract

The invention discloses a passive wave compensation device for sea surface operation, and relates to the related field of offshore platform base observation stations, the passive wave compensation device comprises a retracting and releasing device, a suspension rope is mounted on a suspension arm of the retracting and releasing device, the bottom of the suspension rope is connected with an adjusting seat, and the bottom of the adjusting seat is connected with the middle of a hoisting plate through a universal joint; the bottom of the adjusting seat is universally connected with a first sleeve in an equal-angle mode, a small-amplitude compensation assembly is arranged on the outer side of the first sleeve, and large-amplitude compensation assemblies are arranged at the top and the bottom of the adjusting seat. According to the passive wave compensation device for sea surface operation, in the using process, a multi-degree-of-freedom compensation mechanism is adopted, the wave influence can be better dealt with, the passive design is adopted, a complex active control system and a large amount of energy consumption are not needed, through cooperation of rigid compensation and elastic damping elements, different compensation modes can be achieved when waves of different sizes exist, and the compensation effect is good. The device can automatically switch compensation modes under different amplitudes, and the overall stability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to offshore platform-based observation stations, and specifically to a passive wave compensation device for sea surface operations. Background Art

[0002] Offshore platform-based observation stations can observe hydrological elements such as ocean currents, sea waves, sea surface temperature, salinity, and sea level height, which is helpful for ocean scientific research, ocean engineering design, and ocean resource development. It may also be used for ocean ecological environment observation, geological observation, etc., or provide special observation services for specific offshore activities and projects. During the process of ocean observation operations at offshore platform-based observation stations, the continuous disturbance of sea waves seriously affects the stability of equipment and the accuracy of operations.

[0003] To solve the above defects, the prior art (a Chinese patent with publication number CN101948002B and publication date April 10, 2013) provides a compound wave compensation device. The winch is connected to the base plate through an oil cylinder pulley group. The oil cylinder pulley group includes a fixed pulley, a movable pulley, and a plunger-type wave compensation oil cylinder. It also includes a base. The plunger-type wave compensation oil cylinder is installed on the base. The plunger-type wave compensation oil cylinder includes a cylinder body and a plunger that can move within the cylinder body. The fixed pulley is fixed at the bottom end of the cylinder body, and the movable pulley is installed on the plunger. An accumulator is connected to the cylinder body through an oil pipe. An outer position switch and an inner position switch for starting drift compensation are respectively fixed on the base. A bracket that can touch the outer position switch and the inner position switch is provided on the plunger. When the bracket is in the middle position between the outer position switch and the inner position switch, it is in the passive compensation stage, and at this time, it does not consume energy. When the bracket is in a position outside the passive compensation stage, it is in the active compensation stage. Although it consumes energy, it is a rare situation, and the compensation range is wide.

[0004] In the above solution, during the use process, when compensating for waves, a mechanical rigid compensation method of the oil cylinder and the plunger is adopted. The compensation effect is relatively rigid, and the degree of freedom of compensation is also very limited. Moreover, when an offshore platform-based observation station actually operates at sea, the influence of wave size on the offshore platform-based observation station is different. The wave compensation effect of a single mechanism is limited. These structures can only alleviate the small-amplitude shaking of the platform to a certain extent, and for large-amplitude wave motions in medium and high sea conditions, they cannot effectively suppress the shaking of the observation equipment, thus causing difficulties in the progress of offshore operations. Summary of the Invention

[0005] The object of the present invention is to provide a passive wave compensation device for sea operations, so as to solve the problems in the above-mentioned background technology. The existing passive wave compensation devices for sea operations adopt a mechanical rigid compensation method using oil cylinders and plungers during wave compensation. The compensation effect is relatively rigid, and the degree of freedom of compensation is also limited. Moreover, when the offshore platform-based observation station actually operates at sea, the influence of wave sizes on the offshore platform-based observation station is different. The wave compensation effect of a single mechanism is limited. These structures can only relieve the small-amplitude shaking of the platform to a certain extent, and cannot effectively suppress the shaking of the observation equipment for large-amplitude wave motions in medium and high sea states, thus causing difficulties in the progress of sea operations.

[0006] To achieve the above object, the present invention provides the following technical solution: A passive wave compensation device for sea operations, including a retracting and deploying device. A suspension rope is installed on the boom of the retracting and deploying device. The bottom of the suspension rope is connected to an adjustment seat. The bottom of the adjustment seat is connected to the middle part of a lifting plate through a universal joint. A fixing belt is arranged at the bottom of the lifting plate.

[0007] The bottom of the adjustment seat is equiangularly and universally connected to a first sleeve. The bottom of the first sleeve is slidably connected to a first sliding column. The first sliding column is universally connected to the top of the lifting plate. A small-amplitude compensation component is arranged on the outer side of the first sleeve.

[0008] Receiving grooves are equiangularly opened on the outer side of the bottom of the adjustment seat. Movable toothed plates are slidably connected in the receiving grooves. Protrusions are installed in the middle of the front and rear sides of the movable toothed plates. The protrusions are slidably connected in limiting grooves through connecting springs. The limiting grooves are opened inside the adjustment seat. Large-amplitude compensation components are arranged at the top and bottom of the adjustment seat.

[0009] Further, the small-amplitude compensation component includes vertical plates installed equiangularly on the top of the lifting plate. A damping buffer spring is installed on the side of the vertical plate. The end of the damping buffer spring is connected to an end plate. The end plate faces the first sleeve.

[0010] Further, the end plate is arranged in a semi-circular structure. The outer side of the end plate abuts against a flange. The flange is composed of two fixed rings with different connection diameters. The end plate and the flange form a contact compensation structure through the damping buffer spring.

[0011] Further, the flange is made of piezoelectric material. The diameter of the lower part of the flange is small and the diameter of the upper part is large. When encountering small waves, the end plate abuts against the lower part of the flange. When encountering large waves, the end plate abuts against the upper part of the flange. A permanent magnet is installed at the top of the first sliding column. An electromagnet is arranged at the inner top of the first sleeve. Energy storage batteries and electromagnetic coils are distributed and installed at the inner top of the first sleeve. The magnetic poles of the opposite faces of the permanent magnet and the electromagnet are the same.

[0012] Furthermore, the large-amplitude compensation component includes a gear rotatably connected to the middle part inside the adjustment seat at equal angles. The gear is meshed and connected with the movable toothed plate. The movable toothed plate forms a telescopic sliding structure through bumps and connecting springs, and the gear forms a rotating structure through the movable toothed plate.

[0013] Furthermore, the front and rear sides of the shaft part of the gear are connected with a first screw rod through a bevel gear connector. The first screw rods are rotatably connected to the bottom of the adjustment seat in groups at equal angles. The outer side of the first screw rod is threadedly connected with a first sleeve rod. The first sleeve rod is arranged in a rectangular structure, and the bottom of the first sleeve rod penetrates through the bottom of the adjustment seat.

[0014] Furthermore, the bottom of the first sleeve rod is provided with a first bottom plate. A second bottom plate is arranged below the first bottom plate. Second sleeves are symmetrically fixed to the top of the second bottom plate. Second sliding columns are slidably connected in the second sleeves. The top of the second sliding columns is fixedly connected with the first bottom plate. A damping shock-absorbing spring is installed between the second sleeves and the second sliding columns.

[0015] Furthermore, the bottom of the second bottom plate is located above the lifting plate. The first sleeve rod drives the first bottom plate and the second bottom plate to form a vertical sliding structure through the first screw rod.

[0016] Furthermore, the top of the first screw rod is integrally installed with a second screw rod. The outer side of the second screw rod is threadedly connected with a second sleeve rod. The second sleeve rod slidably penetrates through the top of the adjustment seat. The tops of adjacent second sleeve rods are rotatably connected with a roller.

[0017] Furthermore, the thread direction of the second screw rod is the same as that of the first screw rod. The top of the roller abuts against the middle part of the suspension rope.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] During the use of this passive wave compensation device for sea operations, a compensation mechanism with multiple degrees of freedom is adopted, enabling the offshore platform-based observation station to better cope with the influence of waves. The passive design eliminates the need for a complex active control system and a large amount of energy consumption. Through the cooperation of rigid compensation and elastic damping elements, different compensation modes can be achieved under waves of different sizes, enabling the device to automatically switch compensation modes at different amplitudes and improving the overall stability.

[0020] 1. Furthermore, the retracting and deploying device bears the lifting plate through the suspension rope and the adjustment seat, places it on the sea for corresponding monitoring operations. The adjustment seat is connected to the lifting plate through a universal joint, enabling multiple degrees of freedom for subsequent passive compensation of waves and better coping with the influence of waves.

[0021] 2. Further, when the lifting plate is slightly affected by waves, the first sliding column below the first sleeve at the bottom of the adjusting seat will be driven to slide. When the first sliding column slides, the damping buffer spring on the vertical plate will make the end plate abut against the lower outer side of the flange, from the lowest position to the middle of the lower outer side. As a result, the damping buffer spring will be compressed, generating a lateral abutting force, which further compensates for the waves, causing the shaking to subside quickly. When large waves hit later, the moving amount of the first sliding column becomes larger and the displacement also increases. As a result, the damping buffer spring and the end plate will gradually abut against the upper outer side of the flange, and the compression amount of the damping buffer spring will increase, providing a greater lateral abutting force. The greater the force of the end plate abutting against the flange, the more electricity is generated by the flange. The electricity is stored in the energy storage battery, and the energy storage battery will drive the electromagnetic coil to generate a magnetic field, further increasing the magnetic force of the electromagnet. After the magnetic force of the electromagnet increases, the repulsive force between the electromagnet and the permanent magnet with the same magnetic pole will also increase, providing a large repulsive force to the inclined side, causing the lifting plate to rotate, enabling the lifting plate to quickly compensate for large waves and maintain stability during use, thus maintaining the stability of the lifting plate.

[0022] 3. Further, when being affected by larger waves passively, the activity range of the lifting plate becomes larger and the whole tilts. Then, it will squeeze the toothed plate at the corresponding position at the bottom of the adjusting seat. After being pressed, the toothed plate slides into the storage groove. At the same time, after the toothed plate slides, it drives the gear to rotate. After the gear rotates, it drives the first screw rod to rotate synchronously through the bevel gear connection piece. After the first screw rod rotates, it drives the first sleeve rod below to extend. The first bottom plate and the second bottom plate at the bottom of the first sleeve rod, in the initial state, can perform small-wave auxiliary compensation through the cooperation of the second sleeve and the second sliding column with the damping shock-absorbing spring. When encountering large waves later, on the basis of the basic abutment, the first sleeve rod drives the first bottom plate and the second bottom plate to move downward as a whole, thus pressing down and leveling the tilted side of the lifting plate, enabling it to quickly return to the correct position after tilting.

[0023] 4. Further, when the first screw rod rotates, it drives the second screw rod to rotate synchronously. After the second screw rod rotates, it drives the second sleeve rod to move downward, further reducing the position where the roller abuts against the suspension rope, thus assisting in improving the leveling speed of the lifting plate. After leveling, the toothed plate resets, and the first sleeve rod and the second sleeve rod also move upward and reset, thus maintaining the stability of the whole adjusting plate and the lifting plate and improving the efficiency and quality of wave compensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic bottom view structure diagram of the whole invention;

[0025] Figure 2 It is a schematic front view structure diagram of the compensation device of the invention;

[0026] Figure 3 Top view schematic diagram of the top of the hoisting plate of the present invention;

[0027] Figure 4 Bottom view schematic diagram of the bottom of the adjusting seat of the present invention;

[0028] Figure 5 Middle part sectional view schematic diagram of the hoisting plate of the present invention;

[0029] Figure 6 Middle part sectional view schematic diagram of the adjusting seat of the present invention;

[0030] Figure 7 Internal partial explosion schematic diagram of the adjusting seat of the present invention;

[0031] Figure 8 Connection structure schematic diagram of the movable tooth plate, gear, first screw rod and second screw rod of the present invention;

[0032] Figure 9 For the present invention Figure 7 Partial enlarged structure schematic diagram in.

[0033] In the figure: 1. Reel device; 2. Suspension rope; 3. Adjusting seat; 4. Universal joint; 5. Hoisting plate; 6. Fixed belt; 7. First sleeve; 8. First sliding column; 9. Permanent magnet; 10. Vertical plate; 11. Damping buffer spring; 12. End plate; 13. Flange; 14. Movable tooth plate; 15. Storage groove; 16. Protrusion; 17. Connection spring; 18. Limiting groove; 19. Gear; 20. First screw rod; 21. First sleeve rod; 22. First bottom plate; 23. Second bottom plate; 24. Second sleeve; 25. Second sliding column; 26. Damping shock-absorbing spring; 27. Second screw rod; 28. Second sleeve rod; 29. Slide roller; 30. Electromagnet; 31. Energy storage battery; 32. Electromagnetic coil. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0035] Embodiment 1: Please refer to Figures 1 - 2 , the present invention provides the following technical solutions: A passive wave compensation device for sea operations includes a reel device 1, a suspension rope 2 is installed on the boom of the reel device 1, the bottom of the suspension rope 2 is connected to an adjusting seat 3, the bottom of the adjusting seat 3 is connected to the middle part of a hoisting plate 5 through a universal joint 4, and a fixed belt 6 is arranged at the bottom of the hoisting plate 5.

[0036] During use, the equipment used in the offshore platform-based observation station is installed at the bottom of the lifting plate 5 through the fixing belt 6. The retracting and deploying device 1 bears the lifting plate 5 through the suspension rope 2 and the adjusting seat 3, and places it in the sea for corresponding monitoring operations. The adjusting seat 3 is connected to the lifting plate 5 through the universal joint 4, so that multiple degrees of freedom can be achieved during subsequent passive compensation for waves, and better cope with the influence of waves.

[0037] On the basis of the above solution, a damping buffer spring 11 and a flange 13 are also disclosed. Please refer to Figures 3 - 5 As shown, the specific structure is as follows: The bottom of the adjusting seat 3 is connected to the first sleeve 7 in an equiangular universal manner. The bottom of the first sleeve 7 is slidably connected to the first sliding column 8. The first sliding column 8 is connected to the top of the lifting plate 5 in a universal manner. A small-amplitude compensation component is arranged on the outer side of the first sleeve 7. The small-amplitude compensation component includes vertical plates 10 installed on the top of the lifting plate 5 at equal angles. A damping buffer spring 11 is installed on the side of the vertical plate 10. The end of the damping buffer spring 11 is connected to an end plate 12. The end plate 12 faces the first sleeve 7. The end plate 12 is set as a semi-circular structure. The outer side of the end plate 12 abuts against the flange 13. The flange 13 is set as two fixed rings with different connection diameters. The end plate 12 and the flange 13 form a contact compensation structure through the damping buffer spring 11. The flange 13 is made of piezoelectric material. The lower diameter of the flange 13 is small and the upper diameter is large. When there are small waves, the end plate 12 abuts against the lower part of the flange 13. When there are large waves, the end plate 12 abuts against the upper part of the flange 13. A permanent magnet 9 is installed on the top of the first sliding column 8. An electromagnet 30 is arranged on the inner top of the first sleeve 7. An energy storage battery 31 and an electromagnetic coil 32 are distributed and installed on the inner top of the first sleeve 7. The magnetic poles of the opposite faces of the permanent magnet 9 and the electromagnet 30 are the same.

[0038] During use, when the lifting plate 5 is passively affected by small waves, the first sliding column 8 below the first sleeve 7 at the bottom of the adjusting seat 3 will be driven to slide. When the first sliding column 8 slides, the damping buffer spring 11 on the vertical plate 10 will make the end plate 12 abut against the lower outer side of the flange 13, abutting from the lowest position to the middle of the lower outer side. As a result, the damping buffer spring 11 will be compressed, generating a lateral abutting force to assist in compensating for the waves and quickly calming the shaking. When large waves hit later, the movement amount of the first sliding column 8 becomes larger and the displacement also increases. Consequently, the damping buffer spring 11 and the end plate 12 will gradually abut against the upper outer side of the flange 13, and the compression amount of the damping buffer spring 11 will increase, providing a greater lateral abutting force. The greater the force of the end plate 12 abutting against the flange 13, the more electricity is generated by the flange 13. The electricity is stored in the energy storage battery 31, and the energy storage battery 31 will drive the electromagnetic coil 32 to generate a magnetic field, thereby increasing the magnetic force of the electromagnet 30. After the magnetic force of the electromagnet 30 increases, the repulsive force between it and the permanent magnet 9 with the same magnetic pole will also increase, providing a large repulsive force on the tilted side to rotate the lifting plate 5, enabling the lifting plate 5 to quickly compensate for large waves and maintain stability during use, thus maintaining the stability of the lifting plate 5.

[0039] Embodiment Two:

[0040] On the basis of Embodiment One, a first sleeve rod 21, a first bottom plate 22, a second bottom plate 23, and a damping shock-absorbing spring 26 are also disclosed. Please refer to Figures 2 - 4 、 Figure 6 and Figures 8 - 9As shown in the figure, its specific structure is as follows: Receiving grooves 15 are equiangularly formed on the outer side of the bottom of the adjusting seat 3. An active toothed plate 14 is slidably connected in the receiving groove 15. Convex blocks 16 are installed in the middle of the front and rear sides of the active toothed plate 14. The convex blocks 16 are slidably connected in the limiting grooves 18 through connecting springs 17. The limiting grooves 18 are formed inside the adjusting seat 3. Large-amplitude compensation components are arranged at the top and bottom of the adjusting seat 3. The large-amplitude compensation components include gears 19 rotatably connected equiangularly in the middle of the inner side of the adjusting seat 3. The gears 19 are meshed and connected with the active toothed plate 14. The active toothed plate 14 forms a telescopic sliding structure through the convex blocks 16 and the connecting springs 17. The gears 19 form a rotating structure through the active toothed plate 14. The front and rear sides of the shaft part of the gear 19 are connected with a first screw rod 20 through bevel gear connectors. The first screw rods 20 are rotatably connected in groups equiangularly at the bottom of the adjusting seat 3. The outer sides of the first screw rods 20 are threadedly connected with first sleeve rods 21. The first sleeve rods 21 are arranged in a rectangular structure. The bottoms of the first sleeve rods 21 penetrate to the bottom of the adjusting seat 3. A first bottom plate 22 is installed at the bottom of the first sleeve rods 21. A second bottom plate 23 is arranged below the first bottom plate 22. Second sleeve tubes 24 are symmetrically fixed to the top of the second bottom plate 23. Second sliding columns 25 are slidably connected in the second sleeve tubes 24. The tops of the second sliding columns 25 are fixedly connected with the first bottom plate 22. A damping shock-absorbing spring 26 is installed between the second sleeve tubes 24 and the second sliding columns 25. The bottom of the second bottom plate 23 is located above the lifting plate 5. The first sleeve rods 21 drive the first bottom plate 22 and the second bottom plate 23 to form a vertical sliding structure through the first screw rods 20.

[0041] During use, when being affected by larger waves passively, the amplitude of movement of the lifting plate 5 becomes larger, and the whole tilts. Then, the active toothed plate 14 at the corresponding position at the bottom of the adjusting seat 3 will be squeezed. After being pressed, the active toothed plate 14 slides into the receiving groove 15. At the same time, the convex blocks 16 will move synchronously in the limiting grooves 18 to compress the connecting springs 17, thereby maintaining the stability of the movement of the active toothed plate 14. After the active toothed plate 14 slides, it drives the gear 19 to rotate. After the gear 19 rotates, it drives the first screw rod 20 to rotate synchronously through the bevel gear connector. After the first screw rod 20 rotates, it drives the first sleeve rod 21 below to extend. The first bottom plate 22 and the second bottom plate 23 at the bottom of the first sleeve rod 21, in the initial state, can perform small-amplitude wave-assisted compensation through the cooperation of the second sleeve tube 24 and the second sliding column 25 and the damping shock-absorbing spring 26. When encountering large waves later, on the basis of the basic contact, the first sleeve rod 21 drives the first bottom plate 22 and the second bottom plate 23 to move downward as a whole, so as to press and level the tilted lifting plate 5, making it quickly return to the correct position after tilting.

[0042] Embodiment 3:

[0043] On the basis of Embodiment 2, a second sleeve rod 28 and a roller 29 are also disclosed. Please refer to Figures 1 - 4 and Figures 6 - 9As shown, its specific structure is as follows: A second screw rod 27 is integrally installed at the top of the first screw rod 20. A second sleeve rod 28 is threadedly connected to the outside of the second screw rod 27. The second sleeve rod 28 slidably penetrates and is connected to the top of the adjusting seat 3. A roller 29 is rotatably connected between the tops of adjacent second sleeve rods 28. The thread direction of the second screw rod 27 is the same as that of the first screw rod 20. The top of the roller 29 abuts against the middle of the suspension rope 2.

[0044] During use, when the first screw rod 20 rotates, it drives the second screw rod 27 to rotate synchronously. After the second screw rod 27 rotates, it drives the second sleeve rod 28 to move downward, thereby reducing the position where the roller 29 abuts against the suspension rope 2, thus assisting in increasing the leveling speed of the lifting plate 5. After leveling, the movable tooth plate 14 resets, and the first sleeve rod 21 and the second sleeve rod 28 also move upward and reset, thereby maintaining the overall stability of the adjusting seat 3 and the lifting plate 5 and improving the efficiency and quality of wave compensation.

[0045] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A passive wave compensation device for sea surface operations, comprising a retracting and deploying device (1), a suspension rope (2) is installed on the boom of the retracting and deploying device (1), the bottom of the suspension rope (2) is connected to an adjusting seat (3), the bottom of the adjusting seat (3) is connected to the middle of a lifting plate (5) through a universal joint (4), and a fixing belt (6) is arranged at the bottom of the lifting plate (5); It is characterized in that: The bottom of the adjusting seat (3) is universally connected at equal angles to a first sleeve (7), the bottom of the first sleeve (7) is slidably connected to a first sliding column (8), the first sliding column (8) is universally connected to the top of the lifting plate (5), and a small-amplitude compensation component is arranged on the outer side of the first sleeve (7); Receiving grooves (15) are opened at equal angles on the outer side of the bottom of the adjusting seat (3), a movable tooth plate (14) is slidably connected in the receiving grooves (15), convex blocks (16) are installed in the middle of the front and rear sides of the movable tooth plate (14), the convex blocks (16) are slidably connected in a limiting groove (18) through a connecting spring (17), the limiting groove (18) is opened inside the adjusting seat (3), and a large-amplitude compensation component is arranged at the top and bottom of the adjusting seat (3).

2. The passive wave compensation device for sea surface operation according to claim 1, wherein: The small-amplitude compensation component includes vertical plates (10) installed at equal angles on the top of the lifting plate (5), a damping buffer spring (11) is installed on the side of the vertical plate (10), the end of the damping buffer spring (11) is connected to an end plate (12), and the end plate (12) faces the first sleeve (7).

3. The passive wave compensation device for sea surface operation according to claim 2, characterized in that: The end plate (12) is arranged in a semi-circular structure, the outer side of the end plate (12) abuts against a flange (13), the flange (13) is provided with two fixed rings with different connection diameters, and a contact compensation structure is formed between the end plate (12) and the flange (13) through the damping buffer spring (11).

4. The passive wave compensation device for sea surface operation according to claim 3, wherein: The flange (13) is made of piezoelectric material, the lower diameter of the flange (13) is small and the upper diameter is large. When encountering small waves, the end plate (12) abuts against the lower part of the flange (13), and when encountering large waves, the end plate (12) abuts against the upper part of the flange (13). A permanent magnet (9) is installed at the top of the first sliding column (8), an electromagnet (30) is arranged at the inner top of the first sleeve (7), an energy storage battery (31) and an electromagnetic coil (32) are distributed and installed at the inner top of the first sleeve (7), and the magnetic poles of the opposite faces of the permanent magnet (9) and the electromagnet (30) are the same.

5. The passive wave compensation device for sea surface operation according to claim 4, wherein: The large-amplitude compensation component includes gears (19) rotatably connected at equal angles to the middle of the inner side of the adjusting seat (3), the gears (19) are meshed with the movable tooth plates (14), the movable tooth plates (14) form a telescopic sliding structure through the convex blocks (16) and the connecting springs (17), and the gears (19) form a rotating structure through the movable tooth plates (14).

6. The passive wave compensation device for sea surface operation according to claim 5, wherein: The front and rear sides of the shaft part of the gear (19) are connected with a first screw rod (20) through bevel gear connectors. The first screw rod (20) is rotationally connected to the bottom of the adjusting seat (3) in groups at equal angles. A first sleeve rod (21) is threadedly connected to the outer side of the first screw rod (20). The first sleeve rod (21) is arranged in a rectangular structure, and the bottom of the first sleeve rod (21) penetrates through the bottom of the adjusting seat (3).

7. The passive wave compensation device for sea surface operation according to claim 6, characterized in that: A first bottom plate (22) is installed at the bottom of the first sleeve rod (21). A second bottom plate (23) is arranged below the first bottom plate (22). Second sleeve barrels (24) are symmetrically fixed to the top of the second bottom plate (23). Second sliding columns (25) are slidably connected in the second sleeve barrels (24). The top of the second sliding columns (25) is fixedly connected to the first bottom plate (22). A damping shock-absorbing spring (26) is installed between the second sleeve barrels (24) and the second sliding columns (25).

8. A passive wave compensation device for sea surface operations according to claim 7, characterized in that: The bottom of the second bottom plate (23) is located above the hoisting plate (5). The first sleeve rod (21) drives the first bottom plate (22) and the second bottom plate (23) to form a vertical sliding structure through the first screw rod (20).

9. The passive wave compensation device for sea surface operations according to claim 8, characterized in that: A second screw rod (27) is integrally installed at the top of the first screw rod (20). A second sleeve rod (28) is threadedly connected to the outer side of the second screw rod (27). The second sleeve rod (28) slidably penetrates through the top of the adjusting seat (3). A roller (29) is rotationally connected between the tops of adjacent second sleeve rods (28).

10. The passive wave compensation device for sea surface operation according to claim 9, characterized in that: The thread direction of the second screw rod (27) is the same as that of the first screw rod (20). The top of the roller (29) abuts against the middle part of the suspension rope (2).

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